Caterpillarwork toolhammer

Caterpillar H70

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar H70 is a hydraulic hammer, a work tool that mounts on a carrier excavator, wheel excavator, or backhoe loader and runs entirely off the host machine's hydraulic circuit. It carries no engine, transmission, or ECM of its own; it is a mechanical accumulator, valve body, and piston assembly that converts hydraulic flow into striking energy. The H70 sits in the 1,220 J (900 ft-lb) energy class with a 600-1,850 blow-per-minute range and is built for carriers in the 5,000-8,000 kg (11,000-17,600 lb) weight class. It ships in two housing configurations: the standard H70 and the H70S, which adds a fully enclosed, sound-suppressed housing around the same hammer body.

The H70S housing does not change the hammer's working parts, tool diameter, energy class, or blow rate; it wraps the same mechanism in an enclosure that drops sound power from 133 dB(A) to 127 dB(A), at a small weight penalty (435 kg versus 430 kg). Both configurations share one serial-prefix block, so parts and rebuild kits interchange across standard and silenced housings. That shared design keeps the H70 relevant on the used and parts market: buyers are not choosing between different mechanisms, only between a standard housing and a quieter one for noise-sensitive sites, and a well-kept unit of either configuration is judged the same way, on bushing play, housing condition, and blow-rate consistency rather than on engine hours.

Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.

Caterpillar H70 specifications

Weights

Operating weight (H70, flat-top mount)	430 kg (948 lb) - includes hammer, standard tool, and average mounting bracket
Operating weight (H70S silenced, flat-top mount)	435 kg (959 lb) - includes hammer, standard tool, and average mounting bracket
Shipping weight	Not published as a separate figure - operating weight above is the closest factory-documented value; confirm bare-tool crating weight with your dealer

Dimensions

Overall length (H70, flat-top)	470 mm (18.5 in)
Overall length (H70S, flat-top)	520 mm (20.5 in)
Overall length (H70, pin-on)	690 mm (27.1 in)
Overall width (H70, flat-top)	380 mm (15.0 in)
Overall width (H70S, flat-top)	400 mm (15.7 in)
Overall width (H70, pin-on)	348 mm (13.7 in)
Overall height (H70, flat-top)	1,134 mm (44.6 in)
Overall height (H70S, flat-top)	1,150 mm (45.3 in)
Overall height (H70, pin-on)	1,228 mm (48.3 in)
Tool/moil diameter	70 mm (2.8 in) - same across flat-top and pin-on, H70 and H70S
Tool working length (flat-top)	402 mm (15.8 in) for H70; 390 mm (15.3 in) for H70S
Tool working length (pin-on)	355 mm (14.0 in)

Performance

Energy class	1,220 J (900 ft-lb)
Impact frequency (blow rate)	600-1,850 bpm
Recommended carrier weight class	5,000-8,000 kg (11,000-17,600 lb) - small hydraulic excavators, wheel excavators, and backhoe loaders
Sound power level (Lwa)	133 dB(A) standard housing / 127 dB(A) silenced housing (H70S), per Directive 2000/14/EC test method
Productivity guide, non-reinforced concrete	65-107 m3 (85-140 yd3) per 8-hour shift - general estimate only, varies with material and jobsite conditions
Productivity guide, reinforced concrete	19-46 m3 (25-60 yd3) per 8-hour shift - general estimate only, varies with material and jobsite conditions

Service capacities (summary)

Hydraulic flow required (from carrier)	50-150 lpm (13-39 gpm)
Operating pressure required (from carrier)	140 bar (2,030 psi)

Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.

H70 fluids & capacities

System	Capacity	Recommended fluid
Upper tool bushing - grease point	One grease fitting at the upper bushing. Apply roughly 10-15 strokes from a hand grease gun until grease shows at the bushing gap. General guidance for full-size Cat hydraulic hammers is to grease every 2 hours of hammering; smaller mini-excavator-class Cat hammers instead call for every 4 hours or twice per shift, so confirm the exact hour interval for this serial range in the OMM.	Cat Hydraulic Hammer Paste (copper/graphite anti-seize paste made for hammer tool-bushing wear points); if unavailable, a dealer-approved EP-2 grease with moly or other EP additive.
Lower tool bushing - grease point	One grease fitting at the lower, slip-fit, field-serviceable bushing, which carries grease-retention grooves for extended lubrication and wear indication. Same 10-15 stroke application and interval as the upper bushing.	Cat Hydraulic Hammer Paste (copper/graphite anti-seize paste); same product used at the upper bushing.
Auto-lube system, if fitted	Hammer-mounted or carrier-mounted auto-lube units feed both bushing points continuously in place of manual pumping. Check the grease cartridge or reservoir level before each shift.	Cat Hydraulic Hammer Paste cartridge, same paste specification as manual greasing.

Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.

Caterpillar H70 maintenance schedule

Service interval	Tasks
Every 10 h	Grease upper and lower tool bushings with 10-15 gun strokes each before the shift; shorten this in dusty or wet ground conditions that strip grease faster. Confirm mounting bracket, pins, and retaining bolts are tight, undamaged, and free of cracks. Check the tool shank and lower bushing for excess play; a shank that looks dry signals the bushing is grease-starved. Inspect supply and return hydraulic hoses for leaks, abrasion, or cracking before startup. Listen for a solid driving blow versus a light tapping feel or erratic blow rate, an early sign of accumulator trouble. If an auto-lube system is fitted, verify the grease cartridge or reservoir level before starting.
Every 250 h	Check accumulator nitrogen pre-charge pressure; a soft charge shows up as reduced blow force or a tapping feel instead of a clean drive. Inspect the housing for cracks and the buffer/bracket for wear or elongation. Gauge the tool tip or moil for wear and replace it before a worn or mushroomed tip accelerates bushing wear. Re-torque the mounting bracket and through-bolts to spec. Confirm auto-lube pump/cartridge output is reaching both bushing points if the system is fitted.
Every 1,000 h	Rebuild with a full seal kit, replacing all seals and the accumulator diaphragm as a set rather than one at a time. Replace upper and lower tool bushings once play exceeds the allowable wear limit. Inspect the piston and cylinder bore for scoring; recondition or replace as needed. Recharge the accumulator to the correct nitrogen pre-charge after reassembly and before the hammer returns to service. Run the hammer and compare blow rate and blow force to baseline to catch reassembly issues early. Treat 1,000 hours or roughly a year of service, whichever comes first, as the trigger point, then confirm the exact figure against the OMM for this serial range.

Servicing the H70 beyond the schedule

Predictive Maintenance & Wear-Point Monitoring

The H70 has no engine or crankcase, so there is no oil-sample program to run. Predictive maintenance here means tracking the two wear points that actually fail: tool bushing play and accumulator charge. Log grease consumption and bushing clearance shift to shift, and note any drift from a clean driving blow toward a tapping feel or an uneven blow rate. Those two signs, more than any single measurement, predict a coming bushing replacement or accumulator service before the hammer loses usable output on the jobsite.

Corrective & Common Repairs

Most H70 failures trace back to the accumulator or the tool bushings. A worn or leaking diaphragm shows up as reduced blow force, a soft tapping instead of a solid drive, or an erratic blow rate, and is corrected with an accumulator rebuild rather than a full teardown. Blank-firing, running the hammer without the tool bearing on material, is the other common cause of internal damage and is a trigger-discipline issue, not a parts issue. Seal kits address hydraulic leaks at the piston and valve body once housing seepage appears.

Overhaul & Rebuild Points

A full overhaul centers on the tool bushings and the seal set. Upper and lower bushings are field-serviceable and get replaced once shank play exceeds the wear limit, most often the lower bushing since it takes the brunt of off-angle striking. A seal-kit rebuild replaces piston and valve-body seals and the accumulator diaphragm together, and is the point to inspect the cylinder bore and piston for scoring. Recharge the accumulator to correct nitrogen pre-charge before returning the hammer to work.

Seasonal & Environment Servicing

Grease consistency should track ambient temperature: a stiffer winter-grade paste can starve the bushings in cold weather if it will not feed, while hot, dusty sites call for more frequent short greasing intervals since grit works into the bushing faster than lubricant can flush it. Wet or muddy ground washes grease out and shortens the interval further. For noise-restricted jobsites, near hospitals, schools, or residential zones, the H70S's enclosed housing is the seasonal or site-driven choice over the standard H70 housing.

H70 common service parts

Part number	Part	Notes
8T-7915	Adapter-To Transmission Filter	Scheduled service item	Check fitment →

Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.

H70 attachments & work tools

Tool/moil-point styles

Standard chisel, blunt, moil point, moil point X-type, and pyramid tool tips are offered for this hammer body. Standard and nickel-alloy tool steel grades are both available for each style, giving a choice between general-purpose use and extra wear resistance in abrasive material.

Mounting/coupler options

The hammer mounts via a bolt-together bracket that clamps around the powercell, in either a pin-on configuration or a pin-grabber (quick-coupler) configuration to match a carrier already fitted with a matching excavator coupler. Bracket sizing sits in the same class used for other compact hammers at this working weight.

Carrier excavator weight class

Recommended carrier weight runs about 5,000-8,000 kg (11,000-17,600 lb). This covers compact/mini hydraulic excavators, wheel excavators, and backhoe loaders in that class, with published compatibility spanning small excavator and backhoe-loader lines of the matching era.

Factory options/kits

An auto-lube connection/kit is offered so the tool bushing greases automatically while the hammer runs, reducing manual greasing intervals. The sound-suppressed housing version of this same hammer body carries an S suffix, built for noise-sensitive or urban demolition sites; it shares the base hammer's internals and mounting. A dedicated dust-suppression kit is not clearly documented for this specific model in available literature - check with your dealer for current factory-option availability.

All H70 assemblies by section

Every catalogued assembly group for the Caterpillar H70. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Frame And Body

203-0932 Head Gp-Front

20***32	Head Group-Front	1
3J***07	Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve	1
3K***60	Seal Pilot Manifold On; Seal To Boom Check Valve Drain	1
3Q***25	Fitting-Hydraulic	2

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203-0927 Head Gp-Front

20***27	Head Group-Front	1
3J***07	Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve	1
3K***60	Seal Pilot Manifold On; Seal To Boom Check Valve Drain	1
3Q***25	Fitting-Hydraulic	2

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203-0912 Head Gp-Front

20***12	Head Group-Front	1
3J***07	Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve	1
3K***60	Seal Pilot Manifold On; Seal To Boom Check Valve Drain	1
3Q***25	Fitting-Hydraulic	2

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203-0908 Head Gp-Front

20***08	Head Group-Front	1
3J***07	Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve	1
3K***60	Seal Pilot Manifold On; Seal To Boom Check Valve Drain	1
3Q***25	Fitting-Hydraulic	2

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203-0922 Head Gp-Front

20***22	Head Group-Front	1
3J***07	Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve	1
3K***60	Seal Pilot Manifold On; Seal To Boom Check Valve Drain	1
3Q***25	Fitting-Hydraulic	2

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130-3794 Plate Gp-Hammer

09***69	Pin-Cotter	2
13***94	Plate Group-Hammer	1
3E***01	Lockwasher	8
3Q***02	Plate Set-Housing	1

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112-4843 Plate Gp-Hammer

09***70	Pin-Cotter	2
11***43	Plate Group-Hammer	1
12***34	Plate Set-Housing	1
12***35	Tube-Spacer	2

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194-6506 Plate Gp-Hammer

10***47	Pin-Spring	2
12***35	Tube-Spacer	2
12***37	Buffer	2
19***05	Plate Set-Housing	1

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108-9421 Plate Gp-Hammer

09***69	Pin-Cotter	2
10***14	Spacer	2
10***15	Spacer	2
10***16	Spacer	4

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152-0965 Plate Gp-Hammer

15***65	Plate Group-Hammer	1
15***79	Buffer	1
15***87	Plate Set-Housing	1
15***89	Rod-Threaded	2

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152-2516 Plate Gp-Hammer

12***66	Pin	2
15***79	Buffer	2
15***16	Plate Group-Hammer	1
15***17	Plate Set-Housing	1

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157-2241 Plate Gp-Hammer

10***47	Pin-Spring	2
12***35	Tube-Spacer	2
12***37	Buffer	2
15***30	Bushing	2

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124-4706 Plate Gp-Hammer

09***73	Bolt; (Socket Head) (M12x1.75x60mm)	8
12***35	Tube-Spacer	2
12***36	Ring-Spacer	16
12***37	Buffer	2

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138-1138 Plate Gp-Hammer

12***37	Buffer	2
12***40	Pin-Cotter	2
12***66	Pin	2
13***38	Plate Group-Hammer	1

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158-4544 Plate Gp-Hammer

12***66	Pin	2
15***96	Pad-Buffer	1
15***44	Plate Group-Hammer	1
15***45	Plate Set-Housing	1

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157-2242 Plate Gp-Hammer

10***47	Pin-Spring	2
12***37	Buffer	2
15***94	Plate Set-Housing	1
15***42	Plate Group-Hammer	1

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152-2524 Plate Gp-Hammer

15***79	Buffer	2
15***24	Plate Group-Hammer	1
15***25	Plate Set-Housing	1
15***14	Rod-Threaded	2

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158-4542 Plate Gp-Hammer

12***66	Pin	2
15***42	Plate Group-Hammer	1
15***48	Plate Set-Housing	1
15***49	Damper-Rh	1

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121-9539 Plate Gp-Hammer

10***15	Spacer	2
12***39	Plate Group-Hammer	1
12***40	Plate As-Lh	1
12***41	Plate As-Rh	1

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124-9642 Plate Gp-Hammer

12***42	Plate Group-Hammer	1
12***59	Plate Set-Housing	1
12***60	Damper-Lh	1
12***61	Damper-Rh	1

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157-2208 Plate Gp-Hammer

10***47	Pin-Spring	2
12***37	Buffer	2
12***66	Pin	2
15***92	Plate Set-Housing	1

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124-5316 Plate Gp-Hammer

10***14	Spacer	2
10***15	Spacer	2
10***16	Spacer	4
12***16	Plate Group-Hammer	1

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138-1114 Plate Gp-Hammer

09***73	Bolt; (Socket Head) (M12x1.75x60mm)	8
12***37	Buffer	2
12***40	Pin-Cotter	2
13***14	Plate Group-Hammer	1

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152-0963 Plate Gp-Hammer

12***66	Pin	2
15***63	Plate Group-Hammer	1
15***78	Plate Set-Housing	1
15***79	Buffer	1

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171-1375 Plate Gp-Hammer

09***69	Pin-Cotter	2
10***15	Spacer	2
17***75	Plate Group-Hammer	1
17***76	Plate Set-Housing	1

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158-4540 Plate Gp-Hammer

15***40	Plate Group-Hammer	1
15***55	Plate Set-Housing	1
3E***01	Lockwasher	8
3Q***03	Buffer	1

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191-9801 Plate Gp-Hammer

09***69	Pin-Cotter	2
10***15	Spacer	2
19***00	Plate Group-Hammer	1
19***01	Plate Group-Hammer	1

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Hydraulic System

122-7955 Accumulator Gp-Hydraulic

09***06	Bolt-Socket Head; (M16x2x80-mm)	4
10***45	Kit-Seal	1
10***49	Base	1
10***50	Cover	1

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229-1502 Accumulator Gp-Hydraulic

11***09	Membrane-Accumulator	1
12***51	Kit-Seal	1
15***09	Base; (Low Pressure)	1
20***83	Plug As	1

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187-5339 Accumulator Gp-Hydraulic

15***47	Base; (Low Pressure)	1
15***48	Cover	1
15***49	Diaphragm	1
15***53	Kit-Seal	1

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232-3123 Accumulator Gp-Hydraulic

15***28	Kit-Seal	1
20***78	Cover	1
20***83	Plug As	1
23***23	Accumulator Group-Hydraulic	1

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229-1539 Accumulator Gp-Hydraulic

15***50	Base; (High Pressure)	1
15***52	Diaphragm; (High Pressure)	1
15***53	Kit-Seal	1
20***83	Plug As	1

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229-1546 Accumulator Gp-Hydraulic

10***45	Kit-Seal	1
10***51	Diaphragm	1
10***55	Base	1
20***83	Plug As	1

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3q-7305 Accumulator Gp-Hydraulic

3E***24	Lockwasher	8
3E***04	Seal-O-Ring; (119.5mm Id)	1
3Q***05	Accumulator Group-Hydraulic	1
3Q***19	Bottom	1

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122-7956 Accumulator Gp-Hydraulic

10***45	Kit-Seal	1
10***51	Diaphragm	1
10***55	Base	1
10***56	Cover	1

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229-1501 Accumulator Gp-Hydraulic

12***51	Kit-Seal	1
15***11	Base; (High Pressure)	1
15***13	Diaphragm	1
20***83	Plug As	1

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229-2893 Accumulator Gp-Hydraulic

11***98	Base; (High Pressure)	1
11***09	Membrane-Accumulator	1
11***12	Kit-Seal	1
20***83	Plug As	1

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209-7381 Accumulator Gp-Hydraulic

20***78	Cover	1
20***81	Accumulator Group-Hydraulic	1
20***83	Plug As	1
3E***24	Lockwasher	8

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209-7382 Accumulator Gp-Hydraulic

15***28	Kit-Seal	1
20***77	Cover	1
20***82	Accumulator Group-Hydraulic	1
20***83	Plug As	1

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229-1540 Accumulator Gp-Hydraulic

15***47	Base; (Low Pressure)	1
15***49	Diaphragm	1
15***53	Kit-Seal	1
20***83	Plug As	1

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122-7317 Accumulator Gp-Hydraulic

11***98	Base; (High Pressure)	1
11***99	Cover-Accumulator	1
11***09	Membrane-Accumulator	1
11***12	Kit-Seal	1

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187-7734 Accumulator Gp-Hydraulic

15***28	Kit-Seal	1
18***34	Accumulator Group-Hydraulic	1
3E***24	Lockwasher	8
3E***05	Seal-O-Ring	1

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187-5338 Accumulator Gp-Hydraulic

15***50	Base; (High Pressure)	1
15***51	Cover	1
15***52	Diaphragm; (High Pressure)	1
15***53	Kit-Seal	1

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3q-7304 Accumulator Gp-Hydraulic

15***28	Kit-Seal	1
3E***24	Lockwasher	4
3E***34	Seal-O-Ring	1
3Q***04	Accumulator Group-Hydraulic	1

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229-2894 Accumulator Gp-Hydraulic

09***27	Seal-O-Ring	1
11***93	Base; (Low Pressure)	1
11***95	Membrane-Accumulator	1
11***97	Bolt	8

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229-1547 Accumulator Gp-Hydraulic

09***06	Bolt-Socket Head; (M16x2x80-mm)	4
10***45	Kit-Seal	1
10***49	Base	1
10***54	Diaphragm	1

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187-5290 Accumulator Gp-Hydraulic

15***11	Base; (High Pressure)	1
15***12	Cover	1
15***13	Diaphragm	1
15***15	Kit-Seal	1

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187-5289 Accumulator Gp-Hydraulic

11***09	Membrane-Accumulator	1
15***09	Base; (Low Pressure)	1
15***10	Cover	1
15***15	Kit-Seal	1

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122-7314 Accumulator Gp-Hydraulic

09***27	Seal-O-Ring	1
11***93	Base; (Low Pressure)	1
11***94	Cover-Accumulator	1
11***95	Membrane-Accumulator	1

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190-1446 Chart-Connecting Lines

19***46

Chart-Connecting Lines

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191-4886 Chart-Connecting Lines

19***86

Chart-Connecting Lines

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152-2515 Kit-Seal

10***60	Seal	1
14***14	Seal-U-Cup	1
15***90	Seal-Wiper	1
15***91	Seal	1

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116-8212 Kit-Seal

09***27	Seal-O-Ring	1
11***86	Seal	2
11***87	Seal	4
11***90	Seal; (90.0mm Id)	1

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152-2553 Kit-Seal

10***58	Seal	1
15***53	Kit-Seal	1
15***09	Seal	1
15***11	Seal	2

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3q-7325 Kit-Seal

11***22	Seal	1
3E***02	Seal-O-Ring; (104.5mm Id)	2
3E***04	Seal-O-Ring; (119.5mm Id)	1
3E***14	Seal-O-Ring	2

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109-4745 Kit-Seal

10***45	Kit-Seal	1
10***91	Seal-O-Ring	1
10***92	Seal-O-Ring	2
10***56	Seal	1

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120-7351 Kit-Seal

09***83	Seal-O-Ring (Id=174.00mm)	1
12***31	Shim, .025" Thk.	2
12***33	Seal	1
12***34	Wiper	1

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150-8828 Kit-Seal

15***28	Kit-Seal	1
15***22	Seal	1
15***36	Seal	2
15***37	Seal	1

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177-1871 Lines Gp-Connecting

17***71	Lines Group-Connecting	1
17***59	Hose As	2
6V***16	Connector-Seal; (1- 5/16-12)	2
6V***46	Seal-O-Ring	2

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172-3411 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
15***44	Seal	1
16***11	Adapter As	2

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206-7694 Lines Gp-Connecting

13***83	Hose As	2
20***94	Lines Group-Connecting	1
5K***90	Seal-To Hydraulic Cooler Inlet Port	4
6V***35	Connector-Seal; (1- 5/16-12)	4

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177-1866 Lines Gp-Connecting

17***66	Lines Group-Connecting	1
17***64	Hose As	2
17***88	Adapter As	2
6V***57	Seal-O-Ring (Id=29.74mm)	1

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206-7756 Lines Gp-Connecting

10***01	Fitting; (Quick Disconnect, Female)	1
10***06	Fitting; (Quick Disconnect, Male)	1
12***57	Hose-Supply	1
12***59	Hose-Return	1

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206-7693 Lines Gp-Connecting

13***63	Hose As	2
20***93	Lines Group-Connecting	1
5K***90	Seal-To Hydraulic Cooler Inlet Port	4
6V***35	Connector-Seal; (1- 5/16-12)	4

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295-0274 Lines Gp-Connecting

10***01	Fitting; (Quick Disconnect, Female)	1
10***06	Fitting; (Quick Disconnect, Male)	1
29***74	Lines Group-Connecting	1
29***26	Hose As	2

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202-9134 Lines Gp-Connecting

17***64	Hose As	2
20***34	Lines Group-Connecting	1
6V***46	Seal-O-Ring	4
7M***85	Seal,Adapter,Motor Part Of Kit P/N 5r***29	2

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157-7194 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
15***81	Hose As	2
15***94	Lines Group-Connecting	1

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171-2566 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
16***79	Adapter	2
16***43	Seal	1

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158-4617 Lines Gp-Connecting

15***17	Lines Group-Connecting	1
6V***16	Connector-Seal; (1- 5/16-12)	4
6V***46	Seal-O-Ring	4
7M***85	Seal,Adapter,Motor Part Of Kit P/N 5r***29	4

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159-2065 Lines Gp-Connecting

15***65	Lines Group-Connecting	1
17***70	Hose As	2
17***88	Adapter As	2
6V***57	Seal-O-Ring (Id=29.74mm)	1

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203-0998 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
15***81	Hose As	2
20***98	. Spring, Lines Group-Connecting	1

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153-6477 Lines Gp-Connecting

15***96	Fitting As; (Quick Disconnect, Male)(Quick Disconnect)	1
15***97	Fitting As; (Quick Disconnect, Female)	1
15***81	Hose As	2
15***77	Lines Group-Connecting	1

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298-4057 Lines Gp-Connecting

29***57	Lines Group-Connecting	1
29***58	Hose As	2
5K***90	Seal-To Hydraulic Cooler Inlet Port	2
6V***57	Nut-Face Seal; (1-7/16-12-Thd)	2

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203-1008 Lines Gp-Connecting

15***96	Fitting As; (Quick Disconnect, Male)(Quick Disconnect)	1
15***97	Fitting As; (Quick Disconnect, Female)	1
15***81	Hose As	2
20***08	Lines Group-Connecting	1

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157-7193 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
15***81	Hose As	2
15***44	Seal	1

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177-1907 Lines Gp-Connecting

17***07	Lines Group-Connecting	1
17***05	Hose As	2
1P***02	Seal-Rectangular 28.83mm(1.136in) Id	2
4I***65	Boss	2

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161-1511 Lines Gp-Connecting

10***01	Fitting; (Quick Disconnect, Female)	2
10***06	Fitting; (Quick Disconnect, Male)	2
12***34	Coupling As	2
14***98	Grommet	4

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261-9508 Lines Gp-Connecting

26***08	Lines Group-Connecting	1
4J***20	Seal (For Tilt Ports On Valve)	2
5K***90	Seal-To Hydraulic Cooler Inlet Port	2
6V***16	Connector-Seal; (1- 5/16-12)	2

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180-4006 Lines Gp-Connecting

15***96	Fitting As; (Quick Disconnect, Male)(Quick Disconnect)	1
15***97	Fitting As; (Quick Disconnect, Female)	1
15***44	Seal	1
16***11	Adapter As	2

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180-4179 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
16***79	Adapter	2
16***43	Seal	1

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174-2299 Lines Gp-Connecting

10***01	Fitting; (Quick Disconnect, Female)	1
10***06	Fitting; (Quick Disconnect, Male)	1
13***75	Hose As	2
17***99	Lines Group-Connecting	1

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203-1014 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
17***58	Hose As	2
20***14	Lines Group-Connecting	1

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206-7695 Lines Gp-Connecting

13***63	Hose As	2
14***35	Connect Group; (Each Includes)	2
20***95	Lines Group-Connecting	1
3D***24	O-Ring - For Oil Drain & Level Plug (Items 3 & 7)	2

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202-9128 Lines Gp-Connecting

17***64	Hose As	2
20***28	Lines Group-Connecting	1
3D***24	O-Ring - For Oil Drain & Level Plug (Items 3 & 7)	2
6V***37	Adapter; (-12/-12 Orb/Orfs)	2

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202-9133 Lines Gp-Connecting

14***48	Fitting As; (Quick Disconnect, Male)	1
14***49	Fitting As; (Quick Disconnect, Female)	1
17***57	Hose As	2
20***33	Lines Group-Connecting	1

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203-0984 Lines Gp-Connecting

10***15	Connector	2
15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
16***85	Hose As	2

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206-7692 Lines Gp-Connecting

10***01	Fitting; (Quick Disconnect, Female)	1
10***06	Fitting; (Quick Disconnect, Male)	1
12***71	Hose-Supply	1
12***72	Hose-Return	1

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177-1858 Lines Gp-Connecting

17***58	Lines Group-Connecting	1
17***77	Hose As	2
6V***46	Seal-O-Ring	4
7M***85	Seal,Adapter,Motor Part Of Kit P/N 5r***29	2

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203-1010 Lines Gp-Connecting

15***96	Fitting As; (Quick Disconnect, Male)(Quick Disconnect)	1
15***97	Fitting As; (Quick Disconnect, Female)	1
18***19	Hose As	2
20***10	Lines Group-Connecting	1

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203-1011 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
15***81	Hose As	2
20***11	Lines Group-Connecting	1

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164-2430 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
16***79	Adapter	2
16***30	Lines Group-Connecting	1

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177-1865 Lines Gp-Connecting

17***65	Lines Group-Connecting	1
17***64	Hose As	2
17***88	Adapter As	2
6V***57	Seal-O-Ring (Id=29.74mm)	1

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206-7691 Lines Gp-Connecting

10***01	Fitting; (Quick Disconnect, Female)	1
10***06	Fitting; (Quick Disconnect, Male)	1
12***57	Hose-Supply	1
12***59	Hose-Return	1

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294-9536 Lines Gp-Connecting

10***01	Fitting; (Quick Disconnect, Female)	1
10***06	Fitting; (Quick Disconnect, Male)	1
29***36	Lines Group-Connecting	1
29***25	Hose As	2

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172-3412 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
16***79	Adapter	2
16***43	Seal	1

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177-1855 Lines Gp-Connecting

16***43	Seal	1
17***55	Lines Group-Connecting	1
17***05	Adapter As	2
17***64	Hose As	2

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202-9129 Lines Gp-Connecting

17***50	Hose As	2
20***29	Lines Group-Connecting	1
3D***24	O-Ring - For Oil Drain & Level Plug (Items 3 & 7)	2
6V***37	Adapter; (-12/-12 Orb/Orfs)	2

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202-9132 Lines Gp-Connecting

17***70	Hose As	2
20***32	Lines Group-Connecting	1
6V***16	Connector-Seal; (1- 5/16-12)	2
6V***46	Seal-O-Ring	4

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203-0977 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
17***58	Hose As	2
20***77	Lines Group-Connecting	1

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177-1856 Lines Gp-Connecting

16***43	Seal	1
17***56	Lines Group-Connecting	1
17***05	Adapter As	2
17***50	Hose As	2

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206-7696 Lines Gp-Connecting

13***61	Hose As	2
14***35	Connect Group; (Each Includes)	2
20***96	Lines Group-Connecting	1
3D***24	O-Ring - For Oil Drain & Level Plug (Items 3 & 7)	2

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203-0981 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
18***41	Hose As	2
20***81	Lines Group-Connecting	1

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203-0983 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
18***95	Hose As	2
20***83	Lines Group-Connecting	1

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202-9130 Lines Gp-Connecting

20***30	Lines Group-Connecting	1
21***69	Hose As	2
6V***16	Connector-Seal; (1- 5/16-12)	2
6V***46	Seal-O-Ring	4

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171-2567 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
17***67	Lines Group-Connecting	1
17***18	Hose As	2

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128-6724 Lines Gp-Connecting

10***01	Fitting; (Quick Disconnect, Female)	1
10***06	Fitting; (Quick Disconnect, Male)	1
12***57	Hose-Supply	1
12***59	Hose-Return	1

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131-2564 Lines Gp-Connecting

13***63	Hose As	2
13***64	Lines Group-Hammer; -Custom	1
15***95	Adapter As	2
15***46	Seal	1

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131-2882 Lines Gp-Connecting

13***82	Lines Group-Hammer; -Custom	1
13***83	Hose As	2
15***95	Adapter As	2
15***46	Seal	1

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127-9579 Lines Gp-Connecting

10***01	Fitting; (Quick Disconnect, Female)	1
10***06	Fitting; (Quick Disconnect, Male)	1
12***79	Lines Group-Hammer; -Custom	1
12***57	Hose-Supply	1

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131-3160 Lines Gp-Connecting

13***60	Lines Group-Hammer; -Custom	1
13***61	Hose As	2
15***95	Adapter As	2
15***46	Seal	1

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127-9577 Lines Gp-Connecting

10***01	Fitting; (Quick Disconnect, Female)	1
10***06	Fitting; (Quick Disconnect, Male)	1
12***71	Hose-Supply	1
12***72	Hose-Return	1

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131-2962 Lines Gp-Connecting

13***62	Lines Group-Hammer; -Custom	1
13***63	Hose As	2
15***95	Adapter As	2
15***46	Seal	1

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148-8098 Lubrication Gp-Automatic

10***03	Coupling	4
10***05	Connector	4
12***72	Hose; (1500-cm)	0
14***39	Pump Group-Lubrication	1

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152-5342 Lubrication Gp-Automatic

06***44	Grommet	1
10***82	Switch As-Pressure	1
12***90	Coupling-Permanent	1
12***13	Coupling-Permanent	5

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152-3395 Lubrication Gp-Automatic

06***44	Grommet	1
10***79	Switch As-Pressure; (Implement/Swing & Travel)	1
12***90	Coupling-Permanent	1
12***13	Coupling-Permanent	5

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152-3402 Pump Gp-Lubrication

15***02	Pump Group-Lubrication	1
15***17	Valve As-Relief; (Grease Pressure)	1
15***19	Board-Circuit	1
15***20	Cover-Housing	1

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153-7532 Pump Gp-Lubrication

15***32	Pump Group-Lubrication	1
15***17	Valve As-Relief; (Grease Pressure)	1
15***19	Board-Circuit	1
15***20	Cover-Housing	1

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187-7722 Valve Gp-Control

15***47	Spool-Valve	1
18***22	Valve Group-Control	1
3Q***06	Body-Valve	1
3Q***15	Housing-Spring	1

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187-7733 Valve Gp-Control

11***56	Body-Valve	1
11***83	Spool-Valve	1
11***12	Kit-Seal	1
15***82	Plug	2

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187-7735 Valve Gp-Control

09***29	Plug	2
15***28	Kit-Seal	1
15***10	Body-Valve	1
15***47	Spool-Valve	1

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203-0907 Valve Gp-Control

11***83	Spool-Valve	1
11***12	Kit-Seal	1
20***06	Body Group-Valve	1
20***07	Valve Group-Control	1

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203-0945 Valve Gp-Control

15***47	Spool-Valve	1
20***43	Body Group-Valve	1
20***45	Valve Group-Control	1
20***63	Plug	2

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203-1003 Valve Gp-Control

15***44	Spool-Valve	1
15***53	Kit-Seal	1
20***01	Body Group-Valve	1
20***03	Carrier, Valve Group-Control	1

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203-1016 Valve Gp-Control

10***60	Seal	1
15***06	Spool-Valve	1
15***15	Kit-Seal	1
20***15	Body Group-Valve	1

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187-5340 Valve Gp-Control

09***23	Plug	2
15***30	Body-Valve	1
15***44	Spool-Valve	1
15***53	Kit-Seal	1

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203-0990 Valve Gp-Control

10***45	Kit-Seal	1
10***61	Spool-Valve	1
10***60	Seal	1
20***88	Body Group-Valve	1

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187-5291 Valve Gp-Control

09***22	Plug	2
10***60	Seal	1
15***92	Body-Valve	1
15***06	Spool-Valve	1

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203-0928 Valve Gp-Control

15***28	Kit-Seal	1
15***47	Spool-Valve	1
20***26	Body Group-Valve	1
20***28	Valve Group-Control	1

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187-5343 Valve Gp-Control

09***23	Plug	2
10***45	Kit-Seal	1
10***48	Body-Valve	1
10***61	Spool-Valve	1

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Service Equipment And Supplies

159-5914 Film Gp

15***52	Film-Warning; (Stay Back)	2
15***53	Film-Information; (Read Omm)	2
15***54	Film-Warning; (Alert)(Safety Alert)	2
15***55	Film-Warning; (Flying Debris, Hearing Protn)	2

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159-5924 Film Gp

14***69	Film-Warning; (Alert)	2
14***70	Film-Warning; (Read Omm)	2
15***56	Film-Warning; (Stay Back 26-Ft)	2
15***57	Film-Warning; (Flying Debris, Hearing Protn)	2

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159-5925 Film Gp

15***52	Film-Warning; (Stay Back)	2
15***53	Film-Information; (Read Omm)	2
15***54	Film-Warning; (Alert)(Safety Alert)	2
15***55	Film-Warning; (Flying Debris, Hearing Protn)	2

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159-5911 Film Gp

15***52	Film-Warning; (Stay Back)	2
15***53	Film-Information; (Read Omm)	2
15***54	Film-Warning; (Alert)(Safety Alert)	2
15***55	Film-Warning; (Flying Debris, Hearing Protn)	2

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159-5926 Film Gp

15***52	Film-Warning; (Stay Back)	2
15***53	Film-Information; (Read Omm)	2
15***54	Film-Warning; (Alert)(Safety Alert)	2
15***55	Film-Warning; (Flying Debris, Hearing Protn)	2

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121-7510 Film Gp

10***55	Plate-Warning	2
12***10	Film Group	1
3Q***78	Film-Warning	2
3Q***79	Plate-Warning	2

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159-5910 Film Gp

15***52	Film-Warning; (Stay Back)	2
15***53	Film-Information; (Read Omm)	2
15***54	Film-Warning; (Alert)(Safety Alert)	2
15***55	Film-Warning; (Flying Debris, Hearing Protn)	2

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159-5923 Film Gp

14***69	Film-Warning; (Alert)	2
14***70	Film-Warning; (Read Omm)	2
15***56	Film-Warning; (Stay Back 26-Ft)	2
15***57	Film-Warning; (Flying Debris, Hearing Protn)	2

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159-5913 Film Gp

15***52	Film-Warning; (Stay Back)	2
15***53	Film-Information; (Read Omm)	2
15***54	Film-Warning; (Alert)(Safety Alert)	2
15***55	Film-Warning; (Flying Debris, Hearing Protn)	2

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121-9538 Film Gp

10***55	Plate-Warning	0
12***38	Film Group	1
13***42	Film; (63)	0
3Q***78	Film-Warning	0

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159-5912 Film Gp

15***52	Film-Warning; (Stay Back)	2
15***53	Film-Information; (Read Omm)	2
15***54	Film-Warning; (Alert)(Safety Alert)	2
15***55	Film-Warning; (Flying Debris, Hearing Protn)	2

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159-5915 Film Gp

15***52	Film-Warning; (Stay Back)	2
15***53	Film-Information; (Read Omm)	2
15***54	Film-Warning; (Alert)(Safety Alert)	2
15***57	Film-Warning; (Flying Debris, Hearing Protn)	2

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159-5916 Film Gp

14***69	Film-Warning; (Alert)	2
14***70	Film-Warning; (Read Omm)	2
15***56	Film-Warning; (Stay Back 26-Ft)	2
15***57	Film-Warning; (Flying Debris, Hearing Protn)	2

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159-5919 Film Gp

14***69	Film-Warning; (Alert)	2
14***70	Film-Warning; (Read Omm)	2
15***56	Film-Warning; (Stay Back 26-Ft)	2
15***57	Film-Warning; (Flying Debris, Hearing Protn)	2

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Work Tool Arrangement

213-9665 Chart-Hammer Ar -Merchandising

21***65

Chart-Hammer Ar; -Merchandising

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213-9664chart-Hammer Ar -Small Hammers

21***64

Chart-Hammer Ar; -Small Hammers

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157-2655 Hammer Ar-Hydraulic

15***08	Plate Group-Hammer	1
15***40	Hammer Group-Hydraulic	1
15***55	Hammer Ar-Hydraulic	1
15***24	Film Group	1

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194-6508 Hammer Ar-Hydraulic

12***14	Tool Group; (European Source Only)	1
19***07	Hammer Ar-Hydraulic	1
19***08	Hammer Ar-Hydraulic	1

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131-1000 Hammer Ar-Hydraulic

12***15	Tool Group; (For European Use Only)	1
13***99	Hammer Ar-Hydraulic	1
13***00	Hammer Ar-Hydraulic	1

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203-1000 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***00	Hammer Ar-Hydraulic, .. Cyl.	1
20***06	Hammer Ar-Hydraulic	1

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161-3503 Hammer Ar-Hydraulic

12***14	Tool Group; (European Source Only)	1
15***55	Hammer Ar-Hydraulic	1
16***03	Hammer Ar-Hydraulic	1

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158-4543 Hammer Ar-Hydraulic

15***43	Hammer Ar-Hydraulic	1
15***44	Plate Group-Hammer	1
15***19	Film Group	1
3Q***01	Hammer Group-Hydraulic	1

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191-9802 Hammer Ar-Hydraulic

15***16	Film Group	1
19***01	Plate Group-Hammer	1
19***02	Hammer Ar-Hydraulic	1
3Q***01	Hammer Group-Hydraulic	1

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203-0941 Hammer Ar-Hydraulic

15***08	Plate Group-Hammer	1
15***24	Film Group	1
20***29	Hammer Group-Hydraulic	1
20***41	Hammer Ar-Hydraulic	1

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152-2527 Hammer Ar-Hydraulic

15***24	Plate Group-Hammer	1
15***27	Hammer Ar-Hydraulic	1
15***28	Hammer Group-Hydraulic	1
15***12	Film Group	1

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203-0952 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***51	Hammer Ar-Hydraulic	1
20***52	Hammer Ar-Hydraulic	1

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203-0974 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***72	Hammer Ar-Hydraulic	1
20***74	Hammer Ar-Hydraulic	1

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203-1026 Hammer Ar-Hydraulic

15***63	Plate Group-Hammer	1
15***11	Film Group	1
20***18	Hammer Group-Hydraulic	1
20***26	Hammer Ar-Hydraulic	1

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203-0986 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***86	Hammer Ar-Hydraulic	1
20***97	.. Axle, Hammer Ar-Hydraulic, Axle; (Sub For At201657), . Axle	1

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203-1020 Hammer Ar-Hydraulic

15***65	Plate Group-Hammer	1
15***10	Film Group	1
20***18	Hammer Group-Hydraulic	1
20***20	Hammer Ar-Hydraulic	1

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203-0934 Hammer Ar-Hydraulic

12***14	Tool Group; (European Source Only)	1
20***33	Hammer Ar-Hydraulic	1
20***34	Hammer Ar-Hydraulic	1

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158-4538 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
15***29	Hammer Ar-Hydraulic	1
15***38	Hammer Ar-Hydraulic	1

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118-5577 Hammer Ar-Hydraulic

11***77	Hammer Ar-Hydraulic	1
12***10	Film Group	1
12***16	Plate Group-Hammer	1
14***05	Adapter As	2

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154-2902 Hammer Ar-Hydraulic

15***62	Hammer Group-Hydraulic	1
15***63	Plate Group-Hammer	1
15***02	Hammer Ar-Hydraulic	1
15***11	Film Group	1

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203-0925 Hammer Ar-Hydraulic

12***15	Tool Group; (For European Use Only)	1
20***24	Hammer Ar-Hydraulic	1
20***25	Hammer Ar-Hydraulic	1

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159-1611 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
15***43	Hammer Ar-Hydraulic	1
15***11	Hammer Ar-Hydraulic	1

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203-0947 Hammer Ar-Hydraulic

10***21	Plate Group-Hammer	1
15***16	Film Group	1
20***46	Hammer Group-Hydraulic	1
20***47	Cover, Hammer Ar-Hydraulic	1

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124-9640 Hammer Ar-Hydraulic

12***40	Hammer Ar-Hydraulic	1
12***41	Hammer Ar-Hydraulic	1
12***12	Tool Group; (For European Use Only)	1

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105-4336 Hammer Ar-Hydraulic

10***36	Hammer Ar-Hydraulic	1
10***21	Plate Group-Hammer	1
15***16	Film Group	1
3Q***01	Hammer Group-Hydraulic	1

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154-2903 Hammer Ar-Hydraulic

15***16	Plate Group-Hammer	1
15***28	Hammer Group-Hydraulic	1
15***03	Hammer Ar-Hydraulic	1
15***13	Film Group	1

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153-9929 Hammer Ar-Hydraulic

15***29	Hammer Ar-Hydraulic	1
15***40	Plate Group-Hammer	1
15***14	Film Group	1
7Q***13	Hammer Group-Hydraulic	1

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203-1005 Hammer Ar-Hydraulic

15***24	Plate Group-Hammer	1
15***12	Film Group	1
20***04	Hammer Group-Hydraulic	1
20***05	Hammer Ar-Hydraulic	1

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138-1137 Hammer Ar-Hydraulic

12***59	Hammer Group-Hydraulic	1
13***37	Hammer Ar-Hydraulic	1
13***38	Plate Group-Hammer	1
15***26	Film Group	1

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203-0997 Hammer Ar-Hydraulic

15***42	Plate Group-Hammer	1
15***15	Film Group	1
20***94	Hammer Group-Hydraulic	1
20***97	.. Axle, Hammer Ar-Hydraulic, Axle; (Sub For At201657), . Axle	1

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130-3801 Hammer Ar-Hydraulic

13***94	Plate Group-Hammer	1
13***01	Hammer Ar-Hydraulic	1
15***16	Film Group	1
3Q***01	Hammer Group-Hydraulic	1

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131-0999 Hammer Ar-Hydraulic

12***59	Hammer Group-Hydraulic	1
13***99	Hammer Ar-Hydraulic	1
13***14	Plate Group-Hammer	1
15***25	Film Group	1

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112-4842 Hammer Ar-Hydraulic

11***42	Hammer Ar-Hydraulic	1
12***47	Hammer Ar-Hydraulic	1
12***15	Tool Group; (For European Use Only)	1

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203-0933 Hammer Ar-Hydraulic

15***23	Film Group	1
19***06	Plate Group-Hammer	1
20***29	Hammer Group-Hydraulic	1
20***33	Hammer Ar-Hydraulic	1

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203-0949 Hammer Ar-Hydraulic

15***16	Film Group	1
19***01	Plate Group-Hammer	1
20***46	Hammer Group-Hydraulic	1
20***49	Hammer Ar-Hydraulic	1

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161-3502 Hammer Ar-Hydraulic

12***14	Tool Group; (European Source Only)	1
15***43	Hammer Ar-Hydraulic	1
16***02	Hammer Ar-Hydraulic	1

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203-0976 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***75	Hammer Ar-Hydraulic	1
20***76	Hammer Ar-Hydraulic	1

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157-2243 Hammer Ar-Hydraulic

15***40	Hammer Group-Hydraulic	1
15***42	Plate Group-Hammer	1
15***43	Hammer Ar-Hydraulic	1
15***23	Film Group	1

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203-1009 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***09	Hammer Ar-Hydraulic	1
20***20	Hammer Ar-Hydraulic	1

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120-5947 Hammer Ar-Hydraulic

11***43	Plate Group-Hammer	1
12***47	Hammer Ar-Hydraulic	1
12***59	Hammer Group-Hydraulic	1

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124-9641 Hammer Ar-Hydraulic

12***41	Hammer Ar-Hydraulic	1
12***42	Plate Group-Hammer	1
15***19	Film Group	1
3Q***01	Hammer Group-Hydraulic	1

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194-6507 Hammer Ar-Hydraulic

15***40	Hammer Group-Hydraulic	1
15***23	Film Group	1
19***06	Plate Group-Hammer	1
19***07	Hammer Ar-Hydraulic	1

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161-3498 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
15***02	Hammer Ar-Hydraulic	1
16***98	Hammer Ar-Hydraulic	1

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203-0975 Hammer Ar-Hydraulic

15***44	Plate Group-Hammer	1
15***19	Film Group	1
20***46	Hammer Group-Hydraulic	1
20***75	Hammer Ar-Hydraulic	1

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161-3499 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
15***27	Hammer Ar-Hydraulic	1
16***99	Hammer Ar-Hydraulic	1

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203-0931 Hammer Ar-Hydraulic

12***14	Tool Group; (European Source Only)	1
20***30	Hammer Ar-Hydraulic	1
20***31	Hammer Ar-Hydraulic	1

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203-0948 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***47	Cover, Hammer Ar-Hydraulic	1
20***48	Hammer Ar-Hydraulic, Cover	1

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158-4541 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
15***27	Hammer Ar-Hydraulic	1
15***41	Hammer Ar-Hydraulic	1

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203-0972 Hammer Ar-Hydraulic

15***16	Film Group	1
17***75	Plate Group-Hammer	1
20***46	Hammer Group-Hydraulic	1
20***72	Hammer Ar-Hydraulic	1

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161-3500 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
15***03	Hammer Ar-Hydraulic	1
16***00	Hammer Ar-Hydraulic	1

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203-1047 Hammer Ar-Hydraulic

12***14	Tool Group; (European Source Only)	1
20***46	Block, Hammer Ar-Hydraulic	1
20***47	Hammer Ar-Hydraulic, Block	1

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203-0910 Hammer Ar-Hydraulic

12***06	Plate Group-Hammer	1
15***25	Film Group	1
20***09	Hammer Group-Hydraulic	1
20***10	Hammer Ar-Hydraulic	1

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138-1136 Hammer Ar-Hydraulic

12***15	Tool Group; (For European Use Only)	1
13***36	Hammer Ar-Hydraulic	1
13***37	Hammer Ar-Hydraulic	1

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203-0913 Hammer Ar-Hydraulic

13***14	Plate Group-Hammer	1
15***25	Film Group	1
20***09	Hammer Group-Hydraulic	1
20***13	Hammer Ar-Hydraulic	1

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191-9803 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
19***02	Hammer Ar-Hydraulic	1
19***03	Hammer Ar-Hydraulic	1

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127-5546 Hammer Ar-Hydraulic

12***38	Film Group	1
12***46	Hammer Ar-Hydraulic	1
3D***24	O-Ring - For Oil Drain & Level Plug (Items 3 & 7)	2
5K***90	Seal-To Hydraulic Cooler Inlet Port	2

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171-1374 Hammer Ar-Hydraulic

15***16	Film Group	1
17***74	Hammer Ar-Hydraulic	1
17***75	Plate Group-Hammer	1
3Q***01	Hammer Group-Hydraulic	1

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203-0999 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***99	Hammer Ar-Hydraulic	1
20***05	Hammer Ar-Hydraulic	1

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109-0730 Hammer Ar-Hydraulic

10***36	Hammer Ar-Hydraulic	1
10***30	Hammer Ar-Hydraulic	1
12***12	Tool Group; (For European Use Only)	1

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161-3501 Hammer Ar-Hydraulic

12***14	Tool Group; (European Source Only)	1
15***25	Hammer Ar-Hydraulic	1
16***01	Hammer Ar-Hydraulic	1

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171-1373 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
17***73	Hammer Ar-Hydraulic	1
17***74	Hammer Ar-Hydraulic	1

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124-4707 Hammer Ar-Hydraulic

12***59	Hammer Group-Hydraulic	1
12***06	Plate Group-Hammer	1
12***07	Hammer Ar-Hydraulic	1
15***25	Film Group	1

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130-3802 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
13***01	Hammer Ar-Hydraulic	1
13***02	Hammer Ar-Hydraulic	1

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203-1046 Hammer Ar-Hydraulic

15***42	Plate Group-Hammer	1
15***23	Film Group	1
20***29	Hammer Group-Hydraulic	1
20***46	Block, Hammer Ar-Hydraulic	1

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150-8825 Hammer Ar-Hydraulic

15***25	Hammer Ar-Hydraulic	1
15***40	Hammer Group-Hydraulic	1
15***41	Plate Group-Hammer	1
15***23	Film Group	1

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203-1006 Hammer Ar-Hydraulic

15***16	Plate Group-Hammer	1
15***13	Film Group	1
20***04	Hammer Group-Hydraulic	1
20***06	Hammer Ar-Hydraulic	1

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124-4708 Hammer Ar-Hydraulic

12***07	Hammer Ar-Hydraulic	1
12***08	Hammer Ar-Hydraulic	1
12***15	Tool Group; (For European Use Only)	1

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203-0951 Hammer Ar-Hydraulic

13***94	Plate Group-Hammer	1
15***16	Film Group	1
20***46	Hammer Group-Hydraulic	1
20***51	Hammer Ar-Hydraulic	1

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203-0979 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***79	Hammer Ar-Hydraulic	1
20***95	Hammer Ar-Hydraulic	1

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203-0942 Hammer Ar-Hydraulic

12***14	Tool Group; (European Source Only)	1
20***41	Hammer Ar-Hydraulic	1
20***42	Hammer Ar-Hydraulic	1

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203-0911 Hammer Ar-Hydraulic

12***15	Tool Group; (For European Use Only)	1
20***10	Hammer Ar-Hydraulic	1
20***11	Hammer Ar-Hydraulic	1

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203-0924 Hammer Ar-Hydraulic

13***38	Plate Group-Hammer	1
15***26	Film Group	1
20***09	Hammer Group-Hydraulic	1
20***24	Hammer Ar-Hydraulic	1

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112-8203 Hammer Ar-Hydraulic

11***03	Hammer Ar-Hydraulic	1
12***38	Film Group	1
12***39	Plate Group-Hammer	1
7Q***13	Hammer Group-Hydraulic	1

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203-0995 Hammer Ar-Hydraulic

15***40	Plate Group-Hammer	1
15***14	Film Group	1
20***94	Hammer Group-Hydraulic	1
20***95	Hammer Ar-Hydraulic	1

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153-9927 Hammer Ar-Hydraulic

15***27	Hammer Ar-Hydraulic	1
15***42	Plate Group-Hammer	1
15***15	Film Group	1
7Q***13	Hammer Group-Hydraulic	1

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203-0915 Hammer Ar-Hydraulic

12***15	Tool Group; (For European Use Only)	1
20***13	Hammer Ar-Hydraulic	1
20***15	Hammer Ar-Hydraulic	1

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203-1021 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***21	Hammer Ar-Hydraulic	1
20***26	Hammer Ar-Hydraulic	1

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203-0950 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***49	Hammer Ar-Hydraulic	1
20***50	Hammer Ar-Hydraulic	1

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203-0930 Hammer Ar-Hydraulic

15***41	Plate Group-Hammer	1
15***23	Film Group	1
20***29	Hammer Group-Hydraulic	1
20***30	Hammer Ar-Hydraulic	1

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Work Tools

290-0333 Bracket Gp-Mounting

29***33	Bracket Group-Mounting	1
29***34	Bracket As	1
29***18	Rivet	4
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	8

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230-9508 Bracket Gp-Mounting

23***08	Bracket Group-Mounting	1
26***35	Bracket As	1
8T***93	Bolt-Plt; (M16 X 2.0 X 50)	12
9X***57	Washer-Pipe As To Main Pump Suction Port	12

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280-9885 Bracket Gp-Mounting

28***85	Bracket Group-Mounting	1
28***86	Bracket As-Mounting	1
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	16
8T***31	Nut; (M20x2.5-Thd)	8

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308-7541 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
30***41	Bracket Group-Mounting	1
30***42	Bracket As	1
7X***64	Bolt; (M20x2.5x90-mm)	8

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230-9507 Bracket Gp-Mounting

23***07	Bracket Group-Mounting	1
26***36	Bracket As	1
8T***39	Washer; (6.0mm Thk)(M21.5x6x45mm)	4
8T***30	Capscrew; (Use 12-16) (Hex Hd) (M20x2.5x50) (Gd 10.9 Z)	4

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230-9505 Bracket Gp-Mounting

23***05	Bracket Group-Mounting	1
26***37	Bracket As	1
8T***39	Washer; (6.0mm Thk)(M21.5x6x45mm)	4
8T***30	Capscrew; (Use 12-16) (Hex Hd) (M20x2.5x50) (Gd 10.9 Z)	4

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219-0667 Bracket Gp-Mounting

21***67	Bracket Group-Mounting	1
21***68	Bracket As	1
7X***54	Bolt; (M16x2x70-mm)	12
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	16

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318-2265 Bracket Gp-Mounting

31***64	Bracket As	1
31***65	Bracket Group-Mounting	1
7X***54	Bolt; (M16x2x70-mm)	12
7X***64	Bolt; (M20x2.5x90-mm)	8

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280-9827 Bracket Gp-Mounting

28***27	Bracket Group-Mounting	1
28***28	Bracket As	1
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	16
8T***31	Nut; (M20x2.5-Thd)	8

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215-6525 Bracket Gp-Mounting

21***24	Bracket As	1
21***25	Bracket Group-Mounting	1
21***25	Shim; (0.5-mm Thk)	6
21***26	Shim; (0.1-mm Thk)	6

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204-3379 Bracket Gp-Mounting

09***96	Bolt; (M20x2.5-Thd)	4
20***79	Bracket Group-Mounting	1
20***13	Bracket As	1
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	2

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294-7877 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
29***77	Bracket Group-Mounting	1
29***78	Bracket As	1
7X***54	Bolt; (M16x2x70-mm)	12

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215-6527 Bracket Gp-Mounting

21***26	Bracket As	1
21***27	Bracket Group-Mounting	1
21***65	Shim	6
21***66	Shim	8

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222-7794 Bracket Gp-Mounting

22***94	Bracket Group-Mounting	1
22***98	Bracket As	1
7X***54	Bolt; (M16x2x70-mm)	8
8T***32	Nut (M16 X 2 Thd); (M16x2.00 Thd)	8

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226-2797 Bracket Gp-Mounting

22***97	Bracket Group-Mounting	1
22***96	Bracket As	1
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	16
8T***31	Nut; (M20x2.5-Thd)	8

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222-4850 Bracket Gp-Mounting

22***50	Bracket Group-Mounting	1
22***66	Bracket As	1
7X***54	Bolt; (M16x2x70-mm)	12
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	16

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305-4984 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
30***84	Bracket Group-Mounting	1
30***85	Bracket As	1
7X***54	Bolt; (M16x2x70-mm)	12

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155-4468 Bracket Gp-Mounting

15***68	Bracket Group-Mounting	1
15***77	Bracket As	1
8T***31	Nut; (M20x2.5-Thd)	4
8T***87	Bolt; (M20x2.5x80-mm)	4

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294-7874 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
29***74	Bracket Group-Mounting	1
29***76	Bracket As	1
6V***76	Nut-Lock; (M24 X 3.0)	8

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230-9503 Bracket Gp-Mounting

23***03	Bracket Group-Mounting	1
26***39	Bracket As	1
8T***39	Washer; (6.0mm Thk)(M21.5x6x45mm)	4
8T***30	Capscrew; (Use 12-16) (Hex Hd) (M20x2.5x50) (Gd 10.9 Z)	4

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191-0991 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
19***91	Bracket Group-Mounting	1
20***54	Bracket As	1
6V***76	Nut-Lock; (M24 X 3.0)	10

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300-5047 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
30***47	Bracket Group-Mounting	1
30***48	Bracket As	1
7X***54	Bolt; (M16x2x70-mm)	12

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3q-7608 Bracket Gp-Mounting

16***56	Bracket As	1
3Q***08	Bracket Group-Mounting	1
7X***54	Bolt; (M16x2x70-mm)	12
7X***64	Bolt; (M20x2.5x90-mm)	8

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209-3306 Bracket Gp-Mounting

20***05	Bracket As	1
20***06	Bracket Group-Mounting	1
7X***54	Bolt; (M16x2x70-mm)	12
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	16

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230-9504 Bracket Gp-Mounting

23***04	Bracket Group-Mounting	1
26***38	Bracket As	1
8T***31	Nut; (M20x2.5-Thd)	4
8T***87	Bolt; (M20x2.5x80-mm)	4

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179-9859 Bracket Gp-Mounting

17***59	Bracket Group-Mounting	1
17***72	Bracket As	1
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	16
8T***31	Nut; (M20x2.5-Thd)	8

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305-0511 Bracket Gp-Mounting

30***11	Bracket Group-Mounting	1
30***12	Bracket As	1
7X***54	Bolt; (M16x2x70-mm)	12
7X***64	Bolt; (M20x2.5x90-mm)	8

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333-0098 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
33***98	Bracket Group-Mounting	1
33***99	Bracket As	1
6V***76	Nut-Lock; (M24 X 3.0)	10

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189-2982 Chart-Hammer Tool

15***94	Tool-Chisel	1
15***95	Tool-Moil Point	1
15***98	Tool-Compacting Plate	1
15***59	Shaft	1

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189-2981 Chart-Hammer Tool

12***30	Tool-Compacting Plate	1
12***94	Tool-Long Chisel	1
12***98	Tool-Long Moil Point	1
15***61	Shaft	1

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189-2983 Chart-Hammer Tool

15***89	Tool-Chisel	1
15***90	Tool-Moil Point	1
15***93	Tool-Compacting Plate	1
18***83	Chart-Hammer Tool	1

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189-2978 Chart-Hammer Tool

10***35	Tool-Moil Point	1
10***36	Tool-Chisel	1
12***56	Tool-Blunt	1
12***91	Tool-Long Chisel	1

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189-2980 Chart-Hammer Tool

12***44	Tool-Long Chisel	1
12***46	Tool-Moil Point	1
15***16	Shaft	1
18***80	Chart-Hammer Tool	1

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189-2979 Chart-Hammer Tool

15***26	Tool-Moil Point	1
15***27	Tool-Chisel	1
18***03	Tool-Long Chisel	1
18***05	Tool-Long Moil Point	1

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191-4885 Chart-Mounting Bracket

09***85	Locknut; (M16x2-Thd)	12
10***43	Adjuster Group-Bucket	1
10***57	Adjuster Group-Bucket; (Bucket)	1
12***38	Mounting Group-Hammer; -Custom	1

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190-1444 Chart-Mounting Bracket

12***43	Bracket Group-Mounting	1
12***44	Bracket As	1
12***45	Bracket Group-Mounting	1
12***46	Bracket As	1

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120-7259 Hammer Gp-Hydraulic

10***46	Plug	1
11***56	Body-Valve	1
11***57	Cylinder	1
11***58	Piston	1

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152-0962 Hammer Gp-Hydraulic

10***46	Plug	2
14***14	Seal-U-Cup	1
15***62	Hammer Group-Hydraulic	1
15***90	Seal-Wiper	1

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3q-7301 Hammer Gp-Hydraulic

11***22	Seal	1
3E***05	Washer; (31x56x0.5-mm Thk)	4
3E***24	Lockwasher	56
3E***02	Seal-O-Ring; (104.5mm Id)	2

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7q-8913 Hammer Gp-Hydraulic

09***05	Bolt-Socket Head; (M16x2x100-mm)	8
09***06	Bolt-Socket Head; (M16x2x80-mm)	8
10***60	Washer	4
10***34	Cylinder	1

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203-0909 Hammer Gp-Hydraulic

11***57	Cylinder	1
11***58	Piston	1
11***60	Bushing	1
11***62	Pin-Tool Retainer	2

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203-0994 Hammer Gp-Hydraulic

09***05	Bolt-Socket Head; (M16x2x100-mm)	8
09***06	Bolt-Socket Head; (M16x2x80-mm)	4
10***60	Washer	4
10***34	Cylinder	1

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203-0946 Hammer Gp-Hydraulic

11***22	Seal	1
20***22	Head Group-Front	1
20***45	Valve Group-Control	1
20***46	Hammer Group-Hydraulic	1

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203-1004 Hammer Gp-Hydraulic

09***73	Bolt; (Socket Head) (M12x1.75x60mm)	4
09***05	Bolt-Socket Head; (M16x2x100-mm)	8
10***60	Washer	4
10***43	Nut-Tie Rod	4

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157-2240 Hammer Gp-Hydraulic

11***82	Plate	1
15***28	Kit-Seal	1
15***29	Bushing As	1
15***14	Cylinder	1

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203-0929 Hammer Gp-Hydraulic

11***82	Plate	1
15***28	Kit-Seal	1
15***29	Bushing As	1
15***14	Cylinder	1

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152-2528 Hammer Gp-Hydraulic

09***73	Bolt; (Socket Head) (M12x1.75x60mm)	4
09***05	Bolt-Socket Head; (M16x2x100-mm)	8
10***60	Washer	4
10***43	Nut-Tie Rod	4

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203-1018 Hammer Gp-Hydraulic

10***46	Plug	2
15***90	Seal-Wiper	1
15***91	Seal	1
15***93	Cylinder	1

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H70 serial number reference

The PIN/ID plate on the H70 is riveted to the hammer housing near the mounting bracket/yoke. It shows the model designation (H70 or H70 S) and the Product Identification Number: a 3-letter prefix followed by a sequential serial number, for example 4KL07872. Read and record the full number, not just the prefix, since internal breakpoints within the 4KL block change which seal kit, accumulator, or valve fits.

Prefix	Identifies	Notes
4KL	H70 (standard housing)	Covers the full H70 production run from 4KL00001-up. Recommended carrier weight class runs roughly 5,000-8,000 kg (11,000-17,600 lb), pointing to a production window spanning Cat D-series and E-series carriers. Internal cutoffs inside the block (documented breakpoints near 4KL1000, 4KL3000, and 4KL4000) mark component-level running changes (seal kit, accumulator, control valve), not separate hammer variants. Offered in both pin-on and flat-top mounting frames under this same block.
4KL	H70S (sound-suppressed housing)	Shares the same 4KL serial block as the standard H70 in the parts catalog and in tool (point/chisel) reference listings. The S designation is a silenced-housing option on the same hammer body, not a separate serial-prefix family. Older parts-book cover pages also list this pairing under the plain designation "70" / "70 S" alongside the H-prefixed names.

Frequently asked questions

What carrier size fits the Cat H70 hammer?

The H70 is matched to carriers in the 5,000-8,000 kg (11,000-17,600 lb) class, covering small hydraulic excavators, wheel excavators, and backhoe loaders. The host machine needs to supply 50-150 lpm (13-39 gpm) of hydraulic flow at 140 bar (2,030 psi) for the hammer to operate at its rated energy class.

What is the difference between the H70 and the H70S?

Both use the same hammer body, tool diameter, energy class, and blow-rate range, and share one serial-prefix block. The H70S adds a fully enclosed, sound-suppressed housing that lowers sound power from 133 dB(A) to 127 dB(A), at a small weight increase (435 kg versus 430 kg). Treat the H70S as a housing configuration of the H70, not a separate generation.

How often does the H70 need to be greased?

Grease the upper and lower tool bushings every operating shift, roughly every 2-4 hours of hammering, with 10-15 gun strokes at each point. Dusty or wet conditions call for more frequent greasing since grit and moisture strip lubricant faster. If an auto-lube system is fitted, check the grease cartridge or reservoir level before each shift instead of greasing manually.

What H70 owners discuss

How do I know when the H70's tool bushing needs replacing?

Check for a steady trail of grease bleeding down the tool from the lower bushing during normal operation. A bone-dry tool shank usually means grease intervals are being skipped, or the bushing has already worn past its grease-retention grooves and dust seal. Fit the tool into the bushing bore and check for side-to-side play; noticeable movement means the bushing is out of tolerance and should be replaced along with the dust seal at the same time. Regreasing every shift, roughly 10-15 strokes from the grease gun at the tool-end fitting, is the single biggest factor in bushing and tool life on this size hammer.

What hydraulic flow and pressure does the H70 need from the carrier?

The H70/H70S is built for oil flow in the 50-150 lpm (13-39 gpm) range at an operating pressure around 140 bar (2,030 psi), sized to carriers in the 5,000-8,000 kg (11,000-17,600 lb) class. Feeding flow above the top of that range makes the piston cycle faster than the tool can absorb energy, showing up as bounce, heat, and hose wear. Feeding it below the range starves blow energy and slows breaking. Set the carrier's auxiliary flow and relief-valve pressure to these figures, not just the hammer's rated numbers, and re-check them if the hammer is moved to a different carrier.

What are the warning signs of a failing accumulator or diaphragm?

A sudden drop in blow force, where the hammer taps or clicks on the material instead of driving through it, is the most common complaint. Erratic blow frequency and rougher-than-normal operation often go with it. Oil that looks aerated or foamy at the reservoir can point to nitrogen migrating into the oil side because the diaphragm has ruptured. Gas-side charging is not a jobsite improvisation job; treat it as a controlled procedure and have your dealer verify accumulator condition and correct pre-charge before returning the hammer to service.

What is blank firing and how do I avoid damaging the hammer?

Blank firing happens when the tool is triggered with no material resistance under it, either free air or right after the material has already broken through. Energy that would normally go into the rock instead reflects back up the piston into the housing, the carrier's stick, and the boom, and repeated blank strikes crack housings and beat up bushings and pins over time. Keep steady down-pressure on the tool and release the trigger the instant it punches through. Some newer carriers reduce power or shut the circuit down automatically after a few seconds of no forward progress; treat that as a backstop, not a reason to relax on trigger discipline.

How does the H70S sound-suppressed housing compare with the standard H70?

Same hammer, same power cell; the S designation is only a housing difference, not a different generation. The H70S wraps the working parts in a fully enclosed, rubber-isolated housing that cuts jobsite noise for the operator and anyone working nearby, at the cost of a small weight increase (435 kg / 959 lb versus 430 kg / 948 lb working weight) and a fully closed housing that makes a quick visual check of the tool and upper bushing area harder. The open standard housing is a bit lighter and easier to inspect at a glance. Pick the S housing for noise-restricted, urban, or indoor demolition work; pick standard where noise rules don't apply. Hydraulic specs and carrier match are identical between the two.

What should I check before buying a used H70?

Ask for service history and specifically whether the accumulator has ever been recharged or the diaphragm replaced. Check the lower tool bushing for play and look for a grease trail on the tool shank; a dry shank means grease intervals were skipped somewhere in its life. Inspect the housing and mounting ears for cracks, a classic sign of past blank-firing abuse. If you can, cycle the hammer under load and listen for an irregular blow rate or a hollow, tapping sound that suggests a low gas charge. Have a shop that services hydraulic hammers check the accumulator pre-charge and seal condition, and have your dealer verify that inspection before you put the unit back to work.

Why does the hammer seem to lose power or run rough even though the carrier hydraulics test fine?

On this size hammer, rough running with the carrier circuit otherwise testing to spec usually traces back to the hammer side, not the excavator: low nitrogen pre-charge, a weeping accumulator, or a worn tool bushing letting the tool rattle instead of transmitting a clean blow. Contaminated or overheated oil from extended blank-firing or from working the same spot too long without repositioning the tool will produce similar symptoms. Rule out carrier flow and relief settings first since those are the cheapest to check, then move to the hammer's own accumulator and bushing condition, and have your dealer verify gas charge and internal wear if the symptoms persist.

Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.

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